Adjustable sewing machine light



NOV.. 14, 1950 M |NGWER ADJUSTABLE SEWING MACHINE `LIGI-IT Filed Feb.16, 1949 INVENToR. M92( van/5 Patented Nov. 14, 1950 ADJUSTABLE SEWINGMACHINE LIGHT Max Ingwer, New York, N.`Y., assgnor to ConsolidatedSewing Machine & Supply Co., Inc., New York, N. Y., a corporation of NewYork Application February 16, 1949, Serial No. 76,769

The invention herein disclosed relates to the lighting of industrialmachines and parts, particularly sewing machines.

Objects of the invention are to provide simple and practical means foreciently illuminating 6 Claims. (C1. 248-124) held in final adjustedposition by a single, easily regulated securing means.

Other desirable objects and the novel features of the invention throughwhich all purposes are attained are set forth or will appear in thecourse of the following specification.

The drawing accompanying and forming part of the specificationillustrates a present practical embodiment of the invention. Structureand arrangement, however, may be modified and changed in various Ways,all within the true intent Vand broad scope of the invention, as willappear from the following specification broadly defining and claimingthe invention,

Fig. 1 in the drawing is a broken part sectional view illustrating anembodiment of the invention;

Fig. 2 is an enlarged, broken part sectional View of the adjustableclamp structure as viewed looking in the direction of the arrow 2 inFig, 1;

Fig. 3 is a horizontal sectional View on substantially the plane of line3-3 of Fig. 2;

` Fig. 4 is a vertical sectional View on substantially the plane of line4 4 of Fig. 3;

Fig. 5 is a vertical sectional view on substantially the plane of line5-5 of Fig. 4.

As shown in Fig. 1, the invention comprises a tubular arm 'I carrying alamp 8 and secured in universally adjusted relation on a supporting postor column 9.

The latter is shown as secured in rigid, upstanding relation on asupport, such as a sewing machine table I0 by clamping nut II.

The wiring I2 for the lamp is shown as extending up throughthe tubularpost 9 and out through the tubular arm 1 to the lamp 8, with circuitusually controlled by lamp switch I3.

, The lamp carrying arm 'I is rotatably, longitudinally,slidab1y andinclinably adjustable 0n the post by extending through slots I4 in theparallel side arms of a yoke I5 looped about the post and drawn towardthe back of the post by a smaller yoke I6 disposed at a right angle toyoke I5 and bearing on the front of the post at I'I and adjustablycoupled to the first yoke by a tension bolt I8 and wing nut I9.

The smaller, pressure yoke I6 is guided in nonrotatable relation overthe head of the larger, tension yoke by having its side arms 2l)slidably disposed in slots or notches 2I in the edges of the head 22 ofthe tension yoke.

While the tubular lamp carrying arm 'I may di-v rectly engage the backof the post, it is considered preferable to provide a swivel thrustbearing be; tween these two members, shown in the form of a socket piece23 for the lamp arm swiveled at: 24 on a half-round bearing 25 engagedover the back of the post. This bearing member is shown as havingextended lugs 26 operating in slots 2I in the sides of the yokel so asto be guided in free sliding engagement up and down the post when thescrew I9 is loosened.

With the construction described, the single screw I9 secures the severalparts in all their adjusted relations. Upon loosening this screw thelamp carrying arm, together with the entire swivel and sliding clampstructure, may be freely shifted up and down the post or supportingcolumn and the arm can be longitudinally shifted one way or the other,rotated or shifted into differently inclined positions.

Upon tightening the wing nut I9 the screw I8 will pull the yoke I5forwardly to apply pressure through slots I4 to the arm I7, and pressureof that arm'against the back of the supporting coll umn through theswivel thrust bearing 23, 24, and in this same'action the forward yokeI6 will be thrust at Il against the front of the column, thus to solidlyclamp the lamp supporting arm in any position to which it may have beenturned or shifted. The parts will be held in this relation againstvibration or other forces, but at any time any desired furtheradjustment may be immediately effected on simply loosening the onefastening element, wing nut I9.

The parts are few in number, of rugged construction and can be producedand assembled at low cost. Upon releasing the one fastening, allcooperative pieces are released and consequently the lamp may be shiftedto any position required. If desired, the lamp fixture 28 may be mountedon the end of the lamp arm I by means of universal joint 29.

While of particular importance for industrial sewing machines, worktables and the like, it will be appreciated that the invention has manyother uses. The foregoing specification and claims following are to beconstrued accordingly.

What is claimed is:

1. A universally adjustable lamp lfor sewing machines comprising asupporting column, a lamp carrying arm in crossed relation therewith, arotary swivel thrust bearing interposed between said arm and the back ofsaid post and in sliding engagement with both said arm and said post, athrust yoke having spaced ends slidingly and rotatably engaged over thefront of said post, a tension yoke in crossed relation to Said thrustyoke and extending from across the front of said post in back of saidarm and having slots rotatably and slidingly receiving said arm and atension screw for adjustably drawing the forward ends of said yokestogether to thereby clamp said arm to the back of said column throughsaid interposed rotary swivel thrust bearing.

2. A universally adjustable sewing machine lamp comprising an uprightsupporting post, a lamp carrying arm at the back of said post, a rotaryswivel thrust bearing interposed between the back of Said post and saidarm, a yoke extending about the front of said post and having slots atthe back of the post receiving said arm, a yoke slidingly guided overthe front of said rst yoke at right angles thereto and bearing at itsends against the front of the post and screw means adjustably drawingthe forward portions of said yokes together to pull the rst, slottedyoke forwardly and thrust the second yoke backwardly toward the post.

3. A universally adjustable sewing machine lamp comprising an uprightsupporting post, a lamp carrying arm at the back of said post, a rotaryswivel thrust bearing interposed between the back of said post and saidarm, a yoke extending about the front of said post and having slots atthe back of the post receiving said arm, a yoke slidingly guided overthe front of said rst yoke at right angles thereto and bearing at itsrends against the front of the post and screw means adjustably drawingthe forward portions :of said yokes together to pull the rst, slottedyoke forwardly and thrust the second yoke backwardly toward the post,said swivel thrust bearing including bearing elements rotatably andslidingly tting the lamp carryingY arm and post, respectively, saidelements being swiveled together and the one engaging the post havinglugs slidingly guided in the arms of the yoke embracing the post.

4. A universally adjustable sewing machine lamp comprising an uprightsupporting post, a vlamp carrying arm at the back of said post, a

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rotary swivel thrust bearing interposed between the back of said postand said arm, a, yoke extending about the front of the post and havingslots at the back of the post receiving said arm, a yoke slidinglyguided over the front of said rst yoke at right angles thereto andbearing at its ends against the front of the post and screw meansadjustably drawing the forward portions of said' yokes together to' pullthe rst, slotted yoke forwardly and thrust the second yoke backwardlytoward the post, said swivel thrust bearing having a loose connectionwith said first yoke so as to be shiftable therewith in the adjustmentof said rst yoke on the upright supporting post.

5.`A universally adjustable lamp comprising a supporting post, a lampcarrying arm angularly adjustable across the back of said supportingpost, a yoke extending about the front of said post and about said arm,a second yoke slidingly guided over the iront of said rst yoke at rightangles thereto and bearing at its ends against the front of the post andscrew means adjustably drawing the forward portions of said yokestogether to thereby pull the rst yoke forwardly and thrust the secondyoke rearwardly toward said supporting post.

6. A universally adjustable lamp for sewing machines or the likecomprising a supporting post, a lamp carrying arm swiveled against theback of said post, a U-shaped yoke positioned over the front of saidpost and having side arms extending back at the sides of said post tosaid lamp carrying arm at the back of the post, said side arms havingslots disposed at the back of saidl post and extending substantiallyparallel to the post and receiving said lamp carrying arm, a secondU-shaped yoke disposed at right angles to and engaged over the front oisaid ilrst yoke, said second yoke having spaced side arms extending overthe iront of the rst yoke back into engagement with the front of thepost and a tension screw adjustablyconnecting the overlying portion ofsaid second yoke with the front portion of the rst yoke for drawing theside arms of the first yoke forwardly to adjustably clamp the lampcarrying arm in swiveling engagement against the back of the post. Y MAXINGWER.

REFERENCES CITED The following references are .of record in the le ofthis patent:

UNITED STATES PA'I'E-NTS Number Name Date 713,832 Bailey Nov. 18, 19021,057,658 y Nichols Apr. l, 1913 2,379,379 Schroder June 26, 1945

